Files
lodash/test/toString.test.js
Benjamin Tan d5ef31929a Add initial test files from lodash v4. (#4172)
* Install test dependencies.

* Add initial test files.

These files were created using a simplistic AST manipulator using `recast` to
preserve formatting. There's bound to be a huge chunk of errors, but this serves
as a good start. QUnit was replaced with Mocha, with ES2015 imports running via
`esm`.

As far as possible, QUnit-specific syntax has been replaced with Mocha's
`describe` and `it`, while the native Node.js `assert` module is used for
assertions. Files in the `test` directory ending in `.test.js` will be treated
as test files.

* Add initial passing files to test run.
2019-02-12 09:11:32 -08:00

56 lines
1.5 KiB
JavaScript

import assert from 'assert';
import lodashStable from 'lodash';
import { stubString, symbol } from './utils.js';
import toString from '../toString.js';
describe('toString', function() {
it('should treat nullish values as empty strings', function() {
var values = [, null, undefined],
expected = lodashStable.map(values, stubString);
var actual = lodashStable.map(values, function(value, index) {
return index ? toString(value) : toString();
});
assert.deepStrictEqual(actual, expected);
});
it('should preserve the sign of `0`', function() {
var values = [-0, Object(-0), 0, Object(0)],
expected = ['-0', '-0', '0', '0'],
actual = lodashStable.map(values, toString);
assert.deepStrictEqual(actual, expected);
});
it('should preserve the sign of `0` in an array', function() {
var values = [-0, Object(-0), 0, Object(0)];
assert.deepStrictEqual(toString(values), '-0,-0,0,0');
});
it('should not error on symbols', function() {
if (Symbol) {
try {
assert.strictEqual(toString(symbol), 'Symbol(a)');
} catch (e) {
assert.ok(false, e.message);
}
}
});
it('should not error on an array of symbols', function() {
if (Symbol) {
try {
assert.strictEqual(toString([symbol]), 'Symbol(a)');
} catch (e) {
assert.ok(false, e.message);
}
}
});
it('should return the `toString` result of the wrapped value', function() {
var wrapped = _([1, 2, 3]);
assert.strictEqual(wrapped.toString(), '1,2,3');
});
});